change table name user to ops_user

[johndeange]

What changed

We found that our development Postgres DB in Azure is enforcing a stricter constraint than the Official Postgres Docker image, i.e. the Azure DB does not allow tables to be named user (since it is a keyword).

This PR renames the user table to ops_user

How to test

Automated tests pass.

Definition of Done Checklist

• [x] OESA: Code refactored for clarity
• [x] OESA: Dependency rules followed
• [x] Automated unit tests updated and passed
• [x] Automated integration tests updated and passed
• [x] Automated quality tests updated and passed
• [x] Automated load tests updated and passed
• [x] Automated a11y tests updated and passed
• [x] Automated security tests updated and passed
• [x] 90%+ Code coverage achieved
• [x] Form validations updated

[johndeange]

@jonnalley Yes - there was a query that was returning results in an inconsistent order (did not have an order by) that was making the tests flaky. Also it was using the old Query API so I updated it to use the new SQLAlchemy v2 syntax and removed the flaky part of the test.